Radiator



Jan. 3, 1928.

1,655,031 c. WERRA RADIATOR Filed April 25, 1925 INVENTOR.

A TTORNEYST Patented Jan. 3, 1928.

UNITED srares PATENT OFFICE.

CONRAD WERRA, OF'WAUKESHA, WISCONSIN.

Application 1aed Aprn 25, 1925.

`formed' of a `number of parts connected together and surrounding vthe radiating portion which is of the tubular or honeycomb type.

These constructions form many 'joints which are comparatively frail and are easily damaged and leak, and when damaged they cannot be easily repaired.

It is one of the object-sof the present invention to overcome the before mentioned objectionable features and provide a radiator casing formed of a one-piece casting into which tubular radiator members entend.

A further object of the invention is to-pro vide a. radiator in which the radiating units may be easily repaired or replaced in the event of injury.

A further object of the invention is to provide a. radiator having means for prevent-ing dust or other foreign substances from lodging in the radiating units.

A further object of the invention is to provide a radiator which is of simple construction, is strong, durable and eliicient, and is well adapted for the purpose described.

lith the above and other objects in view, the invention consists of the improved radiator and its parts and combinations as set forth in the claims, and all equivalents thereof.

In theA accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Fig. l is a front view of the improved radiator, parts broken away to show interior construction Fig. 2 is an edge View thereof with parts broken away to show interior construction;

Fig. 3 is a vertical sectional detail view taken on a larger scale through one of the radiator tubes and connected parts.

Fig. l is a vertical sectional detail view taken on line 4:-4 of Fig. 3;

Fig. 5 is a transverse sectional detail view of a modified form of radiating unit; and

Fig. 6 is a vertical sectional detail view of another modified form of radiating unit.

Referring to the drawing, the numeral 8 indicates a rectangular casing consisting of a front 'wall 9, a rear wall 10, and top, bot= RADIATOR.

Serial N0. 25,816.

tom and opposite side edge walls, 11, '12 and 13, respectively. The front and rea-r walls are spaced from each other by the top. bottom and side walls and also by cross brace pins 14, and the opposite side edge portions of the casing are formed with projecting lugs l5 for attaching the casing` to the frame of an automobile. The parts thus -far dcrscribed are preferably, but. not necessarily,

formed of aluminum, and in a single or integral casting, as shown. The casing is also formed with an upper inlet opening 16, lower discharge openings 17 and 17 vand an upper filling opening 18 closed by a cap 19. The front and rear walls 9 and 10 of the casing are formed with registering inwardly extending annular bosses 20 forming shouldered flue openings 21 staggered with relak tion to each other, for receivingl horizontal air flue tubes 22. Said tubes have their opposite end edges flanged over the shoulders of the openings, as indicated by the numeral 28, to form a water tight connection therebetween. Concavo-convex screen caps 24- are tightly titinto the ends of the flue openings 21 to prevent the entrance of dust or other foreign matter into said lines.

Each flue tube is provided or formed with inner radiating flanges or fins 25 which may be of various forms as desired. In the form shown in Figs. l to a inclusive, a flat strip of metal. is twisted a one quarter turn before being welded, soldered or otherwise fastened within the tube to impart a circular movement to the air and cause it to frictionally engage the strip and the inner side surface of the tube and absorb the heat therefrom. The tubes and tins are preferably formed of copper, but other metals may be used. The rear wall of the casing is formed with a flange 26 for engagement with the hood of the automobile and also to reinforce the casing.

In the form shown in Fig. 5, the tube 22 is crimped or corrugated inwardly intermediate its ends to form increased radiating surfaces 28, and in the form shown in Fig. 6, a number of inwardly extending flanges or fins 27 are secured to the inner surface of the tube to provide increased radiation.

From the foregoing description it will be seen that the radiator is of very simple and rigid construction and that if any of the flue tubes should leak or become damaged, they can be easily removed and others sub-k stituted therefor and secured position,

I cla-iin as iny invention is: l. A radiator, comprising a casing having spaced front and rear Walls provided with.

annular recesses formingshouldered Vopenings, and air flue tubesy extending through the openings ot each Wall and having their opposite ends flanged and the langed portions extending into the recessesto foi-in a tight joint with the shouldered portions of the openings, said tubes having inner radiat' ing fins. v

2. A radiator, comprising a one'piece vcasing having opposite 'Walls provided with registering annular recesses forming Vshouldeied openings, horizontal linev tubes rentending'into the openings andhaving `flanged end portions which enter :the :annular Vre- ;eesses and engage the shouldersftoforni a tight connection therewith-Q and ineans Within the tubes for Veausingairto Ytravel in eii- Cuitouspaths through the tubes.

, e SsA radiator, comprising a one piece Casing"hafving opposite Walls provided With registering annular recesses forming shouldered openings,horizontal flue tubes extending into ythe openings and having'l flanged end portions Which'entei the annular re- `cesses and engage the shoulders to 'forni a tight 'connection therewith, and spirally twisted fins positioned Within the flue tubes.

- and spirally Y 4. A radiator, comprising a one piece easing having opposite Wallsprovided with registering annular recesses forming shouldered openings, horizontal flue tubes extending into the openings and having flanged V.end portions which enter the annular reeesses and engage the shoulders to forni a tig-ht ,connection therewith, screen means at the ends of the tubes for preventing the entrance of foreign niatter linto the tubes7 twisted 'this positioned Within the flue tubes.A

' 5. A radiator, Comprising a one piece ycast -casingha'ving front and rear ivallsprovid'ed with registeringannular recesses forming Vshouldered openings, said openings formed 'with annular shoulders, jitlie front'and'rear for causing air to ltravel'in circuitous paths through the tubes.

In testimony whereof, I aiiiz; iiiy'signature. "y

CONRAD WERRA. 

